Patent application number | Description | Published |
20080291789 | Apparatus For Focusing Plasmon Waves - An apparatus comprises a thin film metallic layer, a first dielectric layer arranged on a first side of said thin film metallic layer and having a first index of refraction, a second dielectric layer arranged on the opposite side of said thin film metallic layer from said first dielectric layer, a third dielectric layer arranged on the first side of the thin film metallic layer adjacent to the first dielectric layer and having a second index of refraction that is lower than the first index of refraction, and wherein the thin film metallic layer, the first dielectric layer and the third dielectric layer are arranged to focus plasmon waves induced at an interface between the thin film metallic layer and the third dielectric layer. | 11-27-2008 |
20090040531 | Optical Fly Height Measurement - An optical fly height measurement system includes a planar waveguide, a first diffraction grating for coupling an electromagnetic wave into the planar waveguide wherein the first diffraction grating is positioned for directing the electromagnetic wave towards an air bearing surface of a slider. A second diffraction grating is provided for receiving the electromagnetic wave reflected from the air bearing surface. A detector module and processor are provided to determine the fly height. | 02-12-2009 |
20090074358 | Beam Apodization For A Planar Solid Immersion Mirror - An apparatus includes a planar waveguide, first and second gratings for coupling electromagnetic radiation into the planar waveguide, and a beam shaper for controlling the amplitude distribution of the electromagnetic radiation that impinges on the first and second gratings. A method of coupling electromagnetic radiation into a planar waveguide is also provided. | 03-19-2009 |
20090207519 | Compensating the Effects of Static Head-Media Spacing Variations and Nonlinear Transition Shift in Heat Assisted Magnetic Recording - An apparatus comprises a storage medium, a recording head, a source of electromagnetic radiation, and a control circuit for modulating the source of electromagnetic radiation in response to a static deviation of a spacing between the recording head and the storage medium. A method of compensating a static deviation of a spacing between a recording head and a storage medium performed by the apparatus, and a method of precompensating for nonlinear transition shifts in a heat assisted magnetic recording system, are also provided. | 08-20-2009 |
20090208171 | Waveguide For Heat Assisted Magnetic Recording - An apparatus includes a slider mounted on an arm, a first waveguide including a first core guiding layer, a second waveguide mounted on the slider and including a second core guiding layer having a thickness smaller than the thickness of the first core guiding layer, and a coupler for coupling light from the first core guiding layer to the second core guiding layer. | 08-20-2009 |
20100097901 | Polarization conserving near field transducer for optical recording on magnetic media - In a particular embodiment, an optical transducer includes at least three optically conductive blades arranged symmetrically about a center gap. The optical transducer is adapted to receive polarized light from a light source and to focus the polarized light onto a recording medium while conserving polarization of the polarized light. | 04-22-2010 |
20100123965 | Near-Field Transducers For Focusing Light - An apparatus includes a waveguide shaped to direct light to a focal point, and a near-field transducer positioned adjacent to the focal point, wherein the near-field transducer includes a dielectric component and a metallic component positioned adjacent to at least a portion of the dielectric component. An apparatus includes a waveguide shaped to direct light to a focal point, and a near-field transducer positioned adjacent to the focal point, wherein the near-field transducer includes a first metallic component, a first dielectric layer positioned adjacent to at least a portion of the first metallic component, and a second metallic component positioned adjacent to at least a portion of the first dielectric component. | 05-20-2010 |
20130176838 | PATTERNED MEDIA FOR HEAT ASSISTED MAGNETIC RECORDING - A patterned magnetic recording medium for use in heat assisted magnetic recording comprises an electrically conductive heat sink layer and a plurality of discrete magnetic recording elements positioned adjacent to a first surface of the heat sink layer. Disc drives that include the patterned medium and a method of magnetic recording using the patterned media are also included. | 07-11-2013 |